While not bringing us any startling revelations, the documentary did show the extent of the toil and devastation that the case has had on the individuals, families and communities involved.

Ms Du Plantier’s son, Pierre Louis Baudey-Vignaud, gave an eye-opening account in the documentary, talking both about the trial and about his relationship with his mother, saying: “I am confident that we will get the answer. I’m not sure if it will be tomorrow, in one month, in one year, in 10 years. But I must get the answer for my grandparents before they die.”

Ian Bailey also told the documentary crew that he wanted the Director of Public Prosecutions to try him for murder in Ireland. “It is in my mind and intention to write a letter to the DPP and I’m going to suggest that the DPP or the authorities in Ireland invite the French prosecutors to travel here to Ireland and to overview, under Irish law, my trial here. I would welcome it.”

Earlier this year, Ian Bailey gave his first major public interivew to Hot Press' Olaf Tyaransen about his efforts to clear his name over the course of 20 years. You can read that full interview here.